Other Parts Discussed in Thread: MOTORWARE
Tool/software: Code Composer Studio
Hello,everyone.
Now we know some current value in InstaSPIN-FOC.
Iq、Id、Is、USER_MOTOR_MAX_CURRENT 、DC bus current Ibus、and the phase peak current Ipeak.
I know the Iq is the current reference of axis Q and the Id is zero as usual.
and the Is = sqrt(Id2 + Iq2).
USER_MOTOR_MAX_CURRENT is the max value of the speed controller output .also it is the max value of Iqref.
the Ibus is an average current value.
I want to know the math relationship between the Is and the Ibus,also with the Ipeak.
if they have no math relationship,whether they have some relationship in experience，or just depending on the motor paramater.
When I use the TMDSHVMTRINSPIN motor control kit to drive my PMSM motor , I use the lab05b in motorware.
I set the USER_MOTOR_MAX_CURRENT = 8A ,the motor can work well,but the motor can not reach the target speed 3000 rpm because of current limit。
This time the Iqref is equal to the USER_MOTOR_MAX_CURRENT.
In order to make the motor reach the target speed ,so I set the MOTOR_MAX_CURRENT = 9A,the motor can run a moment,but after while it protects because of the over current.
we know the kit over current protect is 10A.
So I confused about the Is/Ibus/Ipeak. what is the relationship with these variables in math?
if I want to extend the current ,whether I can reduce the current sample Resistance value.
and I want to replace the IPM with an higher current IPM .
Please give me a hand.
Thanks~
